package com.huxianyang.interceptor;

import org.springframework.stereotype.Component;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

/**
 * 
 * @since 2022/06/01 22:05
 * @author HuXianyang
 */

@Component
public class LoginHandlerInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler)
        throws Exception {
        // request.setCharacterEncoding("utf-8");
        // response.setContentType("text/html;charset=utf-8");
        System.out.println("pre_pre");
        HttpSession session = request.getSession();
        Object user = session.getAttribute("user");
        if (user == null) {
            response.getWriter().println("请先登录！");
            return false;
        }
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler,
        ModelAndView modelAndView) throws Exception {
        System.out.println("post_post");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex)
        throws Exception {
        System.out.println("after_after");
    }
}